Grande Ortie, Ortie Dioïque

Foodplant / saprobe
ascoma of Acrospermum compressum is saprobic on dead stem (esp. near base) of Urtica dioica
Remarks: season: 2-6
Other: major host/prey

Foodplant / miner
solitary larva of Agromyza anthracina mines leaf of Urtica dioica
Other: sole host/prey

Foodplant / miner
larva of Agromyza pseudoreptans mines leaf of Urtica dioica
Other: sole host/prey

Foodplant / miner
larva of Agromyza reptans mines leaf of Urtica dioica
Other: sole host/prey

Foodplant / saprobe
apothecium of Allophylaria macrospora is saprobic on dead stem of Urtica dioica
Remarks: season: 9-10

Foodplant / saprobe
effuse colony of Alernaria dematiaceous anamorph of Alternaria alternata is saprobic on dead stem of Urtica dioica

Foodplant / internal feeder
larva of Apion urticarium feeds within stem node of Urtica dioica

Foodplant / saprobe
pulvinate colony of Arthrinium dematiaceous anamorph of Arthrinium urticae is saprobic on dead stem of Urtica dioica
Remarks: season: 11

In Great Britain and/or Ireland:
Foodplant / spot causer
epiphyllous, scattered, immersed pycnidium of Ascochyta coelomycetous anamorph of Ascochyta urtica causes spots on leaf of Urtica dioica
Remarks: season: 8

Foodplant / saprobe
sessile apothecium of Belonidium sulphureum is saprobic on dead stem of Urtica dioica
Remarks: season: 8-10
Other: major host/prey

Foodplant / parasite
effuse colony of Botryosporium anamorph of Botryosporium pulchrum parasitises live Urtica dioica
Remarks: season: 5-11
Other: major host/prey

Foodplant / saprobe
colony of Botrytis dematiaceous anamorph of Botrytis cinerea is saprobic on dead stem of Urtica dioica

Foodplant / saprobe
colony of Cylindrocolla anamorph of Calloria neglecta is saprobic on dead stem of Urtica dioica
Remarks: season: 1-2

Foodplant / saprobe
gregarious, shortly stalked apothecium of Calycina herbarum is saprobic on dead stem of Urtica dioica
Remarks: season: 9-12
Other: major host/prey

Foodplant / feeds on
basidiome of Calyptella capula feeds on living, dying, dead Urtica dioica
Other: major host/prey

Foodplant / saprobe
effuse colony of Camposporium dematiaceous anamorph of Camposporium pellucidum is saprobic on dead stem of Urtica dioica

Plant / resting place / on
adult of Chrysolina fastuosa may be found on Urtica dioica
Remarks: season: 3-12

Foodplant / open feeder
adult of Chrysolina polita grazes on live leaf of Urtica dioica
Remarks: season: (1-)5-7(-12)

Foodplant / saprobe
fruitbody of Coprinopsis urticicola is saprobic on decayed debris of Urtica dioica
Remarks: season: summer

Foodplant / saprobe
fruitbody of Crepidotus luteolus is saprobic on dead stem of Urtica dioica

Foodplant / saprobe
apothecium of Crocicreas coronatum is saprobic on dead stem of Urtica dioica
Remarks: season: 9-11

Foodplant / saprobe
apothecium of Crocicreas cyathoideum var. cyathoideum is saprobic on dead stem of Urtica dioica
Remarks: season: 3-10

Foodplant / gall
Cuscuta europaea causes gall of Urtica dioica
Other: major host/prey

Plant / associate
fruitbody of Cystolepiota bucknallii is associated with Urtica dioica

Plant / associate
fruitbody of Cystolepiota seminuda is associated with Urtica dioica

Foodplant / saprobe
effuse colony of Dendryphiella dematiaceous anamorph of Dendryphiella infuscans is saprobic on dead stem of Urtica dioica
Remarks: season: 4-5

Foodplant / saprobe
effuse colony of Dendryphiella dematiaceous anamorph of Dendryphiella vinosa is saprobic on dead stem of Urtica dioica
Remarks: season: 5-9

Foodplant / saprobe
colony of Dendryphion dematiaceous anamorph of Dendryphion comosum is saprobic on dead stem of Urtica dioica
Remarks: season: 1-12
Other: major host/prey

Foodplant / saprobe
colony of Dendryphion dematiaceous anamorph of Dendryphion nanum is saprobic on dead stem of Urtica dioica

Foodplant / saprobe
immersed perithecium of Diaporthe arctii is saprobic on dead, blackened stem of Urtica dioica
Remarks: season: 7-11

Foodplant / saprobe
densely scattered, immersed, scarcely erumpent pycnidium of Phomopsis coelomycetous anamorph of Diaporthe tulasnei is saprobic on dead stem of Urtica dioica
Remarks: season: 1-4

Foodplant / saprobe
stromatic, immersed, sometimes confluent conidioma of Apomelasmia coelomycetous anamorph of Diaporthopsis urticae is saprobic on dead stem of Urtica dioica
Remarks: season: 2-3

Foodplant / saprobe
effuse colony of Dictyosporium dematiaceous anamorph of Dictyosporium toruloides is saprobic on dead stem of Urtica dioica
Remarks: season: 1-12

Plant / associate
adult of Dicyphus errans is associated with live Urtica dioica
Remarks: season: 6-10

Foodplant / saprobe
sessile apothecium of Discocistella grevillei is saprobic on dead stem of Urtica dioica
Remarks: season: 4-8

Foodplant / saprobe
hypophyllous fruitbody of Efibulobasidium albescens is saprobic on dead stem of Urtica dioica

Plant / associate
fruitbody of Entoloma pleopodium is associated with Urtica dioica

Foodplant / saprobe
colony of Epicoccum dematiaceous anamorph of Epicoccum nigrum is saprobic on dead stem of Urtica dioica
Remarks: season: 1-12

Foodplant / parasite
cleistothecium of Erysiphe urticae parasitises live leaf of Urtica dioica
Remarks: season: 9-10

Plant / associate
fruitbody of Geastrum fimbriatum is associated with Urtica dioica
Other: major host/prey

Plant / associate
fruitbody of Geastrum fornicatum is associated with Urtica dioica
Other: unusual host/prey

Plant / associate
fruitbody of Geastrum lageniforme is associated with Urtica dioica
Other: major host/prey

Foodplant / saprobe
scattered or in small groups perithecium of Gibberella cyanogena is saprobic on dead stem of Urtica dioica
Remarks: season: Autumn, Spring

Foodplant / saprobe
clustered perithecium of Gibberella pulicaris is saprobic on dead stem of Urtica dioica
Remarks: season: 1-4

Foodplant / saprobe
effuse colony of Gyrothrix dematiaceous anamorph of Gyrothrix verticillata is saprobic on dead stem of Urtica dioica
Remarks: season: 9

Plant / associate
fruitbody of Hebeloma pallidoluctuosum is associated with Urtica dioica

Plant / resting place / on
colony of Helicobasidium purpureum may be found on live stem of Urtica dioica
Other: major host/prey

Foodplant / sap sucker
nymph of Heterogaster urticae sucks sap of Urtica dioica
Other: sole host/prey

Foodplant / feeds on
adult of Heterotoma planicornis feeds on bud of Urtica dioica

Foodplant / saprobe
superficial, scattered on in small groups, thinly subiculate perithecium of Hydropisphaera arenula is saprobic on dead stem of Urtica dioica
Remarks: season: 1-12

Foodplant / saprobe
sessile apothecium of Lachnum discolor is saprobic on dead stem of Urtica dioica
Remarks: season: 11

Foodplant / saprobe
apothecium of Laetinaevia carneoflavida is saprobic on damp, dead stem of Urtica dioica
Remarks: season: 6-7

Foodplant / saprobe
sessile apothecium of Lasiobelonium mollissimum is saprobic on dead stem of Urtica dioica
Remarks: season: 4-7

Plant / associate
fruitbody of Lepiota boudieri is associated with Urtica dioica
Other: major host/prey

Plant / associate
fruitbody of Lepiota grangei is associated with Urtica dioica

Plant / associate
fruitbody of Lepiota griseovirens is associated with Urtica dioica
Other: minor host/prey

Foodplant / saprobe
mostly superficial Phoma coelomycetous anamorph of Leptosphaeria acuta is saprobic on dead stem (esp. near base) of Urtica dioica
Remarks: season: 6-1

Foodplant / saprobe
erumpent pseudothecium of Leptosphaeria doliolum is saprobic on dead stem of Urtica dioica
Remarks: season: 1-12
Other: major host/prey

Foodplant / saprobe
immersed, sometimes becoming free pseudothecium of Leptospora rubella is saprobic on dead stem of Urtica dioica
Remarks: season: 4-8

Foodplant / saprobe
immersed or semi-immersed pseudothecium of Lophiostoma angustilabrum is saprobic on dead stem of Urtica dioica
Remarks: season: 2-10
Other: major host/prey

Foodplant / saprobe
immersed pseudothecium of Lophiostoma caudatum is saprobic on dead stem of Urtica dioica
Remarks: season: 1-4

Foodplant / saprobe
immersed or semi-immersed pseudothecium of Lophiostoma caulium is saprobic on dead stem of Urtica dioica
Remarks: season: 1-12
Other: major host/prey

Foodplant / saprobe
immersed to partially erumpent pseudothecium of Lophiostoma origani var. rubidum is saprobic on dead, red to deep magenta stained stem of Urtica dioica
Other: major host/prey

Plant / associate
fruitbody of Macrocystidia cucumis is associated with Urtica dioica

Foodplant / saprobe
fruitbody of Marasmiellus candidus is saprobic on dead litter of Urtica dioica

Plant / resting place / within
puparium of Melanagromyza aenea may be found in stem of Urtica dioica
Other: sole host/prey

Plant / associate
fruitbody of Melanophyllum eyrei is associated with Urtica dioica

Plant / associate
fruitbody of Melanophyllum haematospermum is associated with Urtica dioica
Other: major host/prey

Foodplant / sap sucker
Microlophium carnosum sucks sap of Urtica dioica
Remarks: season: 1-12
Other: major host/prey

Foodplant / saprobe
fruitbody of Mycena adscendens is saprobic on dead stem of Urtica dioica

Foodplant / parasite
hypophyllous colony of Ramularia anamorph of Mycosphaerella superflua parasitises live leaf of Urtica dioica
Remarks: season: 4-9

Foodplant / saprobe
extensive, velvety colony of Cladosporium dematiaceous anamorph of Mycosphaerella tulasnei is saprobic on dead stem of Urtica dioica
Remarks: season: 1-12

Plant / associate
fruitbody of Myriostoma coliforme is associated with Urtica dioica

Foodplant / saprobe
immersed, then exposed apothecium of Naemacyclus caulium is saprobic on dead stem (near base) of Urtica dioica
Remarks: season: 4

Foodplant / feeds on
Nedyus quadrimaculatus feeds on Urtica dioica

Foodplant / saprobe
immersed, sometimes becoming superficial pseudothecium of Ophiobolus erythrosporus is saprobic on dead stem of Urtica dioica
Other: major host/prey

Foodplant / sap sucker
nymph of Orthonotus rufifrons sucks sap of flower bud of Urtica dioica
Remarks: season: late 5-

Foodplant / feeds on
larva of Parathelcus pollinarius feeds on Urtica dioica

Foodplant / saprobe
fruitbody of Pellidiscus pallidus is saprobic on dead stem of Urtica dioica

Foodplant / saprobe
effuse colony of Periconia dematiaceous anamorph of Periconia byssoides is saprobic on dead, patchily blackened stem of Urtica dioica
Other: major host/prey

Foodplant / saprobe
effuse colony of Periconia dematiaceous anamorph of Periconia cookei is saprobic on dead stem of Urtica dioica

Foodplant / saprobe
effuse colony of Periconia dematiaceous anamorph of Periconia minutissima is saprobic on dead stem of Urtica dioica
Remarks: season: 1-12
Other: major host/prey

Foodplant / saprobe
synnema of Endophragmia dematiaceous anamorph of Phragmocephala atra is saprobic on dead stem of Urtica dioica
Remarks: season: 10-1

Foodplant / open feeder
imago of Phyllobius pomaceus grazes on live leaf of Urtica dioica

Foodplant / spot causer
scattered pycnidium of Phyllosticta coelomycetous anamorph of Phyllosticta urticae causes spots on live leaf of Urtica dioica
Remarks: season: 7

Plant / resting place / within
puparium of Phytomyza flavicornis may be found in stem of Urtica dioica
Other: sole host/prey

Foodplant / sap sucker
adult of Plagiognathus chrysanthemi sucks sap of Urtica dioica
Remarks: season: late 6-9(10)
Other: minor host/prey

Foodplant / saprobe
grouped, subepidermal perithecium of Plagiosphaera immersa is saprobic on dead stem of Urtica dioica
Remarks: season: 5-8

Foodplant / saprobe
effuse colony of Pleurophragmium dematiaceous anamorph of Pleurophragmium parvisporum is saprobic on dead, partly decorticate stem of Urtica dioica
Remarks: season: 1-12

Foodplant / saprobe
effuse colony of Polyscytalium dematiaceous anamorph of Polyscytalum berkeleyi is saprobic on dead stem (just above soil level) of Urtica dioica
Remarks: season: 3-5

Foodplant / saprobe
subcuticular to erumpent conidioma of Pseudolachnea coelomycetous anamorph of Pseudolachnea hispidula is saprobic on dead stem of Urtica dioica
Remarks: season: esp. Winter

Foodplant / pathogen
hypophyllous colony of Pseudoperonospora urticae infects and damages live, yellowed leaf of Urtica dioica
Remarks: season: 9 & 5
Other: major host/prey

Foodplant / gall
aecium of Puccinia urticata causes gall of live stem of Urtica dioica
Remarks: season: early Spring

Foodplant / parasite
aecium of Puccinia urticata var. biporula parasitises live Urtica dioica

Foodplant / parasite
pycnium of Puccinia urticata var. urticae-acutae parasitises live Urtica dioica

Foodplant / parasite
pycnium of Puccinia urticata var. urticae-acutiformis parasitises live Urtica dioica

Foodplant / parasite
pycnium of Puccinia urticata var. urticae-flaccae parasitises live Urtica dioica

Foodplant / parasite
pycnium of Puccinia urticata var. urticae-hirtae parasitises live Urtica dioica

Foodplant / parasite
aecium of Puccinia urticata var. urticae-inflatae parasitises live Urtica dioica

Foodplant / parasite
pycnium of Puccinia urticata var. urticae-ripariae parasitises live Urtica dioica

Foodplant / parasite
aecium of Puccinia urticata var. urticae-vesicariae parasitises live Urtica dioica

Foodplant / saprobe
immersed pycnidium of Pyrenochaeta coelomycetous anamorph of Pyrenochaeta fallax is saprobic on dead, patchily grey stem of Urtica dioica

Foodplant / saprobe
apothecium of Pyrenopeziza urticicola is saprobic on dead stem of Urtica dioica
Remarks: season: 4-8

Foodplant / saprobe
scattered, subepidermal, black pycnidium of Rhabdospora coelomycetous anamorph of Rhabdospora pleosporoides is saprobic on old, dead stem of Urtica dioica
Remarks: season: 1-3

Plant / associate
fruitbody of Rhodocybe gemina is associated with Urtica dioica
Other: minor host/prey

Foodplant / saprobe
superficial colony of Sarcopodium dematiaceous anamorph of Sarcopodium circinatum is saprobic on dead stem of Urtica dioica

Foodplant / saprobe
tufted colony of Septofusidium anamorph of Septofusidium herbarum is saprobic on dead stem of Urtica dioica

Foodplant / spot causer
immersed, epiphyllous, numerous, greyish-brown pycnidium of Septoria coelomycetous anamorph of Septoria urticae causes spots on live leaf of Urtica dioica
Remarks: season: 5-8

Foodplant / saprobe
colony of Stachybotrys dematiaceous anamorph of Stachybotrys dichroa is saprobic on dead stem of Urtica dioica
Remarks: season: 4-9

Foodplant / saprobe
effuse colony of Stachylidium dematiaceous anamorph of Stachylidium bicolor is saprobic on dead stem of Urtica dioica

Plant / associate
fruitbody of Stropharia caerulea is associated with Urtica dioica

Foodplant / feeds on
female of Thrips urticae feeds on live flower of Urtica dioica
Remarks: season: 5-10

Foodplant / saprobe
effuse colony of Torula dematiaceous anamorph of Torula herbarum is saprobic on dead stem of Urtica dioica
Other: major host/prey

Foodplant / saprobe
effuse colony of Trichocladium dematiaceous anamorph of Trichocladium opacum is saprobic on dead stem of Urtica dioica

Plant / associate
fruitbody of Tubaria albostipitata is associated with Urtica dioica

Foodplant / saprobe
fruitbody of Typhula micans is saprobic on dying stem of Urtica dioica
Other: major host/prey

Plant / associate
fruitbody of Tyromyces wynnei is associated with Urtica dioica
Other: major host/prey

Foodplant / saprobe
apothecium of Unguiculella hamulata is saprobic on dead stem of Urtica dioica
Remarks: season: 5-9

Foodplant / saprobe
colony of Volutella anamorph of Volutella ciliata is saprobic on dead stem of Urtica dioica
Remarks: season: 10-4